Grater



B. F. AND G. P. MERTZ.

GBATEH.

APPLICATION FILED MAY is, 1920.

Patented May 2, 1922-.

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BOYD F. MERTZ .AANDGEORGE P. MERTZ, OF NORTHUIVIBERLAND, PENNSYLVANIA.

Gaarne.-

To all whom t may concern.' c

Be it ,known that we, vBOYD F. MErJrz-and Groen P. Maerz, citizens of theUnited States, residing at Northumberland, in the county of Northumberland, State of Pennsylvania, have inventedcertain new and useful Improvements ink Grate-rs; yand we do hereby declare the following lto be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it ap-pertains to make and use the same.

This invent-ion relates to vegetable cutters, and more especially to ythose which are rotary; and the object of the saine is to produce a machine for grating' cocoanut, horseL radish, and the like.

A feature of the machine consists in building it in separate compartments in which different subst-ances can be simultaneously treated, and providing means for exhausting the fumes from one compartment in case horse radish is grated therein.

Another feature consists in providing means for feeding the vmaterial to the cylinder, either in bulk through a hop-per or by hand through a door.

Another feature is the brush removably mounted on the main shaft and by which the material to be grated can be given a preliminary treatment.

Details are set forth below and shown in y the drawings wherein:

Figure 1 is a front elevation of this machine with the right hand compartment and the fan casing and air ducts in section.

Figure 2 is a transverse vertical section, showing one cylinder ineleva-tion.

Mounted on a base l is an upright casing 2 having a central vertical partition 3 dividing it into two compartments, each having a drawer 4c in its lower part, al hopper 5 in its upper part, a lid 6 for the hopper, a door 7 in its front, and a curved rea-r wall 8. An electric motor 10 is mounted on the base and coupled at 11 to a main shaft 12 which is mounted in bearings 13 and extends through both compartments, its further end being squared as at 14 to receive the hub 15 of a wire brush 16 which may be mounted thereon, and by means of which the vegetable to Vbe grated can be given a preliminary treatment. For instance, the inner shell of a cocoanut can be removed'b-y this brush, or the root of horse radish can be brushed and cleaned. Fast on the shaft within the two Specification of Letters Patent.

Applicationy led May 18, 1920.. Serial No. 382,216.

compartments are grating cylinders 18 whose roughened peripheries. grind the inaterial being treated. This material may be fed into the hopper by raising the lid, and .allowed to gravitate onto the grinding cylinder, or the door 7 may be opened and the materialy fed in pieces by hand-onto the hopper and in either case the ground particles drop into the drawer. It is obvious that different substances can be ground simultaneously in the two parts of the structure.

Opening from the grinding space at about the point 2() is a duct 21 which leads into a casing 22 containing a fan 23 mounted on the shaft l2, and an outlet pipe or duct 24 leads from this casing to a remote point. the right hand compartment I will preferably grind horse radish or some material which throws off unpleasant fumes or odors,

and obviously these are drawn out by the fan and delivered through the duct 24 at a point remote from the operator. The motor can be stopped and started by controllingv the current thereto, or it would be possible to drive the Vmain shaft by other means.v

The brush may be .left on the shaft, or may be applied only when it is to be used. it is quite .possible to replace this Abrush with one having softer bristles or a burnishing surface, or even to replace it with a grindstone or soine other element which may be used in the Shop or household or wherever this grinder is to he used.

t should further be noted thatthe suction spout of the exhaust fan is in communication with the casing at a point adjacent to the plane of the front wall of the latter above the front end of the drawer l,so that when the lat-ter is opened or drawn out to give access thereto for the removal of a portion of the grated contents thereof, the fan tends to produce an inward current of air f vin the intervals between the periodic removal of the grated contents for the purpose of filling the demands of customers. It is common to employ Vdevices of this general character at the stands of merchants handling lground horseradish and like substances so that the trade may be supplied 'with the freshly ground productrand it is `because of thenecessty ofV grinding the material as it is sold and therefore of having the apparatus Within convenient reach Vat the' stand or distributing point, that there is-a necessity for disposing of the fumes to prevent* the distress tothe dealer Which Votherwise would be occasioned thereby. Y

i Nhatlis claimed is: v

' An apparatus V:for grinding horseradish and like products` having a casing provided with a motor driven grinding lcylinder and fitted with a movable drawer inreceiving Y relation with the cylinder and adapted to be opened from time to time to Apermit of the removal of the ground product, and a suction the casing.

fan actuable by the cylinder drivinginotoi' and havinga suction spout communicating Vwith the interior voi the Cylindercasing at a point adjacent to the periphery of the drum and above the upper edgeo the front-- end of the drawer for producing an inward current of air When the drawer is opened, said fan beingv provided with a. discharge pipe having its outlet at a point remote fromV aHiX our signa- 

